to grind the violin bridge feet to make it completely attach to top plate

• make sure the bridge stand straight
• clamp the bridge into the device, remember to inclde the "wheel" space and make it comptely parrlel to the top plate surface
• put a sandpaper on the top plate and start sending.

disclamater:
this is for my DIY violin project, please use with expremely caution, always consult with frofessional
luthier first if intend to move your violin bridge position.